package cn.wolfcode.interceptor;


import cn.wolfcode.domain.Employee;
import cn.wolfcode.util.UserContext;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //获取session对象
        Employee session = (Employee)UserContext.getCurrentUser();
        //判断是否有值
        if (session == null) {
            //如果为空,则跳转登陆界面
            response.sendRedirect("/login.html");
            return false;
        }
        //否则放行
        return true;
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
